What is true about water that is freezing?

a. the change cannot be undone.

b. it is going through a physical change.

c. it is going through a chemical change.

d. the chemical makeup of the water will not remain the same?

A container holds 7.5 liters of co2 at STP, how many moles of gas is this?

If an atom has sp hybridization in a molecule: the maximum number of σ bonds that the atom can form is

Which of the following is the correct definition of nuclear energy? A. energy stored in chemical bonds of molecules B. energy produced from the splitting of atoms C. energy an object has because of its motion or position D.

What is the order that makes up a atom.?

The initial water level in a 10 - mL graduated cylinder reads 4.1 mL. after a ruby gemstone is dropped into the cylinder, the water level reads 7.1 mL what is the volume of the ruby?

What conversion factor would you use to find the number of moles in 3.52x10^24 molecules

the solubility in mol/dm3 of 20.2g of potassium trioxonitrate (V) dissolved in 100g of water at room temperature is

Which process occurs at the anode in an electrochemical cell? (1) the loss of protons (2) the loss of electrons (3) the gain of protons (4) the gain of electrons

What is natural transmutation?

An electron in a sodium atom gains enough energy to move from the second shell to the third the sodium atom becomes